Here is an example of faucet abuse
John finally discovers crypto currencies, see a popular website, goes to the website makes the account and turns out he can't use it until he makes a deposit, he rather not make a deposit until he knows what dice is really about, since it might not to for him. He sees the faucet button and decides to try it out. He plays a few times with the faucet, gets hooked and immediately makes a bitcoin deposit. This is not faucet abuse.
Jake discovers a crypto website that has a faucet. He gets 100 VPN accounts and makes 100 accounts and writes a script which can automatically claim the faucet and make a bet. After a few minutes he finally wins big and makes the min withdraw. Then he keeps doing the same thing over and over again while making tons of money without having to make a single deposit and places tons of bets with no risk except for his time. This is faucet abuse.
Good work!
Now you just need to convince
Freebitco.in admins to accept your perfect definition and make a HUGE announcement on their site: "Hey, John! You'll need to deposit after XX faucet claims! Either way GTFU from our money!"
Sending e-mails to all current users also won't hurt: "Hey, guys! We decided to start making money instead of losing it on faucets. Please make a deposit and preferably lose it all with our incredible small house-edge of 5%."
And they definitely should remove that stupid popup: "Allow us to send you
$200 in free bitcoins every hour!"